I cannot activate the crj 500/700 key purchased on simmarket. I get a message that the key is incorrect.

Same here... Product Key from Simbrief not valid in Aerosoft One.

 

Requested support while they are silent

But the B727 FREIGHTER MSFS, also purchased on simmarket, was recognized by Aerosoft One.

Since it is a "new product" add the new upgrade to your cart and proceed with a checkout. It will not have a cost. Once complete you can add the serial to Aerosoft One.

20 minutes ago, BrandonHanley said:

Once complete you can add the serial to Aerosoft One.

...and how might this be done?

 

My CRJ serial# is from 2021 and pre-dates Aerosoft One.  When I go into Aerosoft One --> Library --> Enter Product Key, it tells me that only product keys for Aerosoft One are valid (i.e. product keys in the xxxxx-xxxxx-xxxxx format).

The CRJ serial# doesn't have any dashes in it because, well, they didn't have dashes in it in 2021.

Solved:

Hello Sir,
 
Thank you for your request.
if you previously purchased the CRJ via Simmarket, please "buy" this add-on to receive the update: https://secure.simmarket.com/aerosoft-aerosoft-aircraft-crj-v2-msfs2024.phtml
 
Simply purchase the product and you won't be charged if you are logged into the same account.
You will then be assigned a new serial number that you can use to register the add-on in Aerosoft One.
 
Kind regards,
Robin Junker

11 hours ago, BrandonHanley said:

Since it is a "new product" add the new upgrade to your cart and proceed with a checkout. It will not have a cost. Once complete you can add the serial to Aerosoft One.

Thank you! Its OK now!